ativo vs ato, What's the Difference?

Which to use

“ativo” is an adjective and “ato” is a noun - they look or sound alike but fill different roles in a sentence.

#3,881
“ativo” frequency rank: #1,326
“ato” frequency rank: 5207
confusion score

Side-by-Side Comparison

Feature	ativo	ato
Definition	diligente, expedito	processo de fazer algo; manifestação real e tangível

Where the spellings diverge

Shared letters are muted; the letters that actually set ativo and ato apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.

5 ch

ativo

3 ch

ato

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: ativo is /a.ˈʧi.vu/ while ato is /ˈato/ ou /ˈatu/_(plural:) /ˈatos/, /ˈatus/ ou /ˈatuʃ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 5207, derived from the frequency rank of both members and their visual similarity.

ativo is recorded at frequency rank #3,881, classified as anadj, pronounced /a.ˈʧi.vu/. ato is at rank #1,326, tagged as anoun, pronounced /ˈato/ ou /ˈatu/_(plural:) /ˈatos/, /ˈatus/ ou /ˈatuʃ/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 5207, this pair ranks #69,467 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ativo vs ato

Shared letters: aot. Private to "ativo": iv. Private to "ato": -.

"ativo" · 5 letters · shape VCVCV · "ato" · 3 letters · shape VCV

Known mistypes of this pair

ativo ← aitvo · atiov · ativvo · attivo · atvio · taivo

Frequency comparison

ativo#3,881

ato#1,326

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "ativo" and "ato" be used interchangeably?

No - they are not even the same part of speech. "ativo" is an adjective and "ato" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "ativo" or "ato"?

"ato" is the more common of the two: it sits at frequency rank #1,326 in our Portuguese list, against #3,881 for "ativo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering ativo vs ato

The fastest way to pick the right one every time.

Check the role first: if you need an adjective, it's “ativo”; for a noun, it's “ato”.
See each word in full, definition, IPA, etymology and its other confusables. Full “ativo” entry
Browse more pairs most likely to be confused. Most confusable